ArticleHippocampus2018
Novel encoding and updating of positional, or directional, spatial cues are processed by distinct hippocampal subfields: Evidence for parallel information processing and the "what" stream.
Article in Hippocampus, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
24 citing papers in PubMed.
- Discrete and differentiated encoding of distinct components of spatial experience occurs within the proximodistal subfields of the dorsoventral axis of the hippocampus.Frontiers in behavioral neuroscience · 2026Article
- Cortico-subcortical networks that determine behavioral memory renewal are redefined by noradrenergic neuromodulation.Scientific reports · 2025Article
- Article
- Multiplexed detection of nuclear immediate early gene expression reveals hippocampal neuronal subpopulations that engage in the acquisition and updating of spatial experience.Frontiers in integrative neuroscience · 2025Article
- Interplay of hippocampal long-term potentiation and long-term depression in enabling memory representations.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024Review
- Differentiated somatic gene expression is triggered in the dorsal hippocampus and the anterior retrosplenial cortex by hippocampal synaptic plasticity prompted by spatial content learning.Brain structure & function · 2024Article
- Intracerebral inoculation of healthy non-transgenic rats with a single aliquot of oligomeric amyloid-β (1-42) profoundly and progressively alters brain function throughout life.Frontiers in aging neuroscience · 2024Article
- Neuronal circuitry for recognition memory of object and place in rodent models.Neuroscience and biobehavioral reviews · 2022Review
- Real-time imaging ofProceedings of the National Academy of Sciences of the United States of America · 2022Article
- Apolipoprotein ε4 modifies obesity-related atrophy in the hippocampal formation of cognitively healthy adults.Neurobiology of aging · 2022Article
- Olfactory Information Storage Engages Subcortical and Cortical Brain Regions That Support Valence Determination.Cerebral cortex (New York, N.Y. : 1991) · 2022Article
- Behavioral and Cellular Tagging in Young and in Early Cognitive Aging.Frontiers in aging neuroscience · 2022Article
- The Intriguing Contribution of Hippocampal Long-Term Depression to Spatial Learning and Long-Term Memory.Frontiers in behavioral neuroscience · 2022Review
- A Neural Model of Intrinsic and Extrinsic Hippocampal Theta Rhythms: Anatomy, Neurophysiology, and Function.Frontiers in systems neuroscience · 2021Review
- The Perirhinal Cortex Engages in Area and Layer-Specific Encoding of Item Dimensions.Frontiers in behavioral neuroscience · 2021Article
- Genetic Depletion of BDNF Impairs Extinction Learning of a Spatial Appetitive Task in the Presence or Absence of the Acquisition Context.Frontiers in behavioral neuroscience · 2021Article
- Parallel processing streams in the hippocampus.Current opinion in neurobiology · 2020Review
- The medial prefrontal cortex - hippocampus circuit that integrates information of object, place and time to construct episodic memory in rodents: Behavioral, anatomical and neurochemical properties.Neuroscience and biobehavioral reviews · 2020Review
- Orchestration of Hippocampal Information Encoding by the Piriform Cortex.Cerebral cortex (New York, N.Y. : 1991) · 2020Article
- Involvement of the Postrhinal and Perirhinal Cortices in Microscale and Macroscale Visuospatial Information Encoding.Frontiers in behavioral neuroscience · 2020Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The specific roles of hippocampal subfields in spatial information processing and encoding are, as yet, unclear. The parallel map theory postulates that whereas the CA1 processes discrete environmental features (positional cues used to generate a "sketch map"), the dentate gyrus (DG) processes large navigation-relevant landmarks (directional cues used to generate a "bearing map"). Additionally, the two-streams hypothesis suggests that hippocampal subfields engage in differentiated processing of information from the "where" and the "what" streams. We investigated these hypotheses by analyzing the effect of exploration of discrete "positional" features and large "directional" spatial landmarks on hippocampal neuronal activity in rats. As an indicator of neuronal activity we measured the mRNA induction of the immediate early genes (IEGs), Arc and Homer1a. We observed an increase of this IEG mRNA in CA1 neurons of the distal neuronal compartment and in proximal CA3, after novel spatial exploration of discrete positional cues, whereas novel exploration of directional cues led to increases in IEG mRNA in the lower blade of the DG and in proximal CA3. Strikingly, the CA1 did not respond to directional cues and the DG did not respond to positional cues. Our data provide evidence for both the parallel map theory and the two-streams hypothesis and suggest a precise compartmentalization of the encoding and processing of "what" and "where" information occurs within the hippocampal subfields.
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